The DT1622 … AC current transmitters produce a 4–20 mA output signal proportional to the true effective value
(TRMS) of the input signal for the processing unit.
The device is a passive two-wire transmitter, powered by the 4–20 mA current loop.
The supply voltage range: 12-33 VDC.
The transmitter inputs are separated from the network to be measured by a broadband measuring transformer. The
inputs comply with the CAT III measurement category requirements.
The devices can be ordered in three versions with 6 measuring ranges, according to the type table above. Within the given type, the measuring range can be selected with the front-panel “Hi-Lo” switch. In the 5/1 AAC input version, the measuring range can be expanded with an external current transformer with a ratio of x/5 or x/1.
The inputs can be permanently overdriven up to twice the nominal measuring range.
For the I5/I1 measuring range version, the current to be measured is connected via terminals; for higher measuring ranges, the current-carrying wire must be feed-through the hole on the side of the box.
A green indicator on the front panel indicates the operating status of the device, a continuous light indicates correct operation, a flashing light indicates an error condition.
The device is designed as a 17.5 mm wide, TS-35 rail-mountable terminal housing.
The transmitters fully comply with the requirements of the EN 60688 standard.
| Leaflet of product | Operating Instruction |
| Safety data: | |
|---|---|
| The input and output connection points of the transmitters are separated from each other, the separation complies with the requirements of the EN 61010-1 taking into account the following. | |
| Pollution degree: | 2 |
| Measurement category: | CAT III |
| Input characteristics: | |
| Input current: | see the type deignation |
| Conversion characteristic: | true RMS value |
| Continuous overcurrent capability: | 2 × I |
| Short-term (1 sec.) overcurrent capability: | 20 × I |
| Input consumption: | 0.25 VA (max.) |
| Frequency range: | 40–400 Hz |
| Output characteristics: | |
| Output current: | 4–20 mA, passive |
| Terminal resistance: | 500 ohm (max.) |
| Overvoltage protection: | 35 V (limitier) |
| Overcurrent protection: | 24 mA (limitier) |
| Settling time: | 500 ms (10–90%) |
| Output signal error: | 0.2% (max.) |
| Temperature dependence: | 25 ppm / °C (0–60 °C) |
| Frequency dependence: | 0.3% max. (40–400 Hz) |
| Supply voltage dependence | negligible |
| Load dependence | negligible |
| Power supply: | |
| Supply voltage: | 12 – 33 VDC |
| Environmental conditions: | |
| Operating temperature range: | 0–60 °C (-20–60 °C, on special order) |
| Relative humidity: | 90% (max., non condensing) |
| Installation location: | instrument cabinet |
| Installation: | vertically (mounted on a horizontal rail) |
| Electromagnetic compatibility (EMC) According to EN 61326-1: | |
| Interference emission: | Group 1, Class B |
| Interference immunity: | industrial environment |
| General data: | |
| Design: | TS-35 rail-mounted terminal housing, material: polyamide PA6.6 |
| Electrical connection (output): | screw clamp terminal |
| Electrical connection (input): | srew clamp terminal up to 5 AAC-ig with feed-through > 5 AAC |
| Connecting wire cross-section: | 0.25–2.5 mm2 |
| With feed-through: | 10 mm2 (≤ 40 AAC) 16 mm2 (> 40 AAC) |
| Dimensions: | 17.5 × 104 × 115 mm (width × height × depth) |
| Weight: | 0.100...0.125 kg |
| Protection: | IP 20 |
| Further technical data in the operating instructions. The manufacturer reserves the right to change individual technical data! | |
